So, there are a few things you'll need to know how to do to solve this table. You'll need to know how to turn a fraction into a decimal, a decimal into a fraction, and a decimal into a percentage.
You can convert a fraction into a decimal by simply treating it like a division problem. For 6/7, you can divide 6 by 7 to get 0.8571. You can then turn this into a percentage by multiplying by 100 to get 85.71%.
You can do the same thing for 2/3. Divide 2 by 3 to get 0.6667 and multiply that by 100 to get 66.67%.
Now for the more challenging part. To convert a decimal to a fraction, you can put the number 125 over 1000 to get 125/1000. You can check the math by dividing these out after each simplification. Now, you simplify the fraction by dividing both numbers by their greatest common factor. Both 125 and 1000 can be divided by 25 to get the fraction 5/40. You can simplify that further by dividing both numbers by 5 to get a final fraction of 1/8. You can then multiply 0.125 by 100 to get a percentage of 12.5%.
Finally, for the last one, we've actually already solved it, making the chart:
